.login-form{
    box-shadow: 0 2px 12px 0 rgba(0, 0, 0, 0.5); 
    border-radius: 8px; 
    width: 600px;
    height:240px;
    max-width: 100%;
    padding: 30px 35px 0; 
    margin:0%;
    position:absolute;
    top:60%;
    left:70%;
    margin:-180px 0 0 -220px; 
    opacity:0.8;
    filter:alpha(opacity=60); 
    font:20px;
    font-weight: bolder;
overflow: hidden;
background-color: white;

}
img{
    position: absolute;
    top:-80px;
    overflow: hidden;
}
.Whu{
    position:fixed;
    border:black 1px;
    left:5px;
    top:5px;
}